68787432 has 48 divisors (see below), whose sum is σ = 212915040. Its totient is φ = 19653408.

The previous prime is 68787409. The next prime is 68787517. The reversal of 68787432 is 23478786.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67738 + ... + 68745.

It is an arithmetic number, because the mean of its divisors is an integer number (4435730).

Almost surely, 2^68787432 is an apocalyptic number.

It is an amenable number.

68787432 is an abundant number, since it is smaller than the sum of its proper divisors (144127608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68787432 is a wasteful number, since it uses less digits than its factorization.

68787432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136502 (or 136495 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 68787432 is about 8293.8189032556. The cubic root of 68787432 is about 409.7349704990.

The spelling of 68787432 in words is "sixty-eight million, seven hundred eighty-seven thousand, four hundred thirty-two".